Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures.

Type BC1130 Single
Free Length 1.693"
Seat 1.375" @ 75 lbs
Open 0.950" @ 175 lbs
Coil Bind 0.850"
Retainer BC2130
Spring Seat OEM
Net Cam Lift 0.475" / 12.06mm

Brian Crower valve spring and titanium retainers kits are system matched to work in unison to deliver better valve control at extended RPM and allow for greater lift camshafts for added performance and reliability.

Designed for high rpm, BC valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances.

Features:

• valve spring crafted from high-grade Chrome Silicone Alloy
• select models have CNC Titanium retainers

Fitment:

• Mitsubishi 4B11T Evo X
• Hyundai G4KF Genesis